Improvement in slate-frame attachments



sLATE FRAME ATTACHMENT. No.17`8,043. n Pz-zenzed'myso, 1876..

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N. PETERS, FHOT0LITHOGRAPHER| WASHINTON D C UNITED STATES PATENT EEICEoFREDERIC ARZT, OF NEW YORK, N. Y., ASSIGNOR OF PART OF HIS RIGHT TOFREDERICK C. A. ARZT, JOHN G. ARZT, AND WILLIAM C. ARZT, OF

SAME PLACE.

IMPROVEMENT IN SLATE-FRAME4 ATTACHMENTS.

Specification forming part of Letters Patent No. 178,043, dated May30,1876; application filed 4 April 27, 1876.

. To all whom t may concern Fig. III is a section showing the frameopen.

A represents the slate, and' B the frame,

u' constructed in the usual manner. To one side of the frame B a Wireframe, D, is hinged,by passing the ends through staples a. At the sidesor ends small hooks n are arranged, which, when the frame D is laidagainst the slate, hold the same tight in that position.

The copy-slats C, which` are preferably of thiclrpaper, or card-boardcovered with paper, containing the letters,tigures, or designs to becopied, are placed upon the slate, and the Wire frame D over the same,which latter is held fast and secured by means of the hooks u, holdingthereby the copy-slats rmly in their place.

When the slate is to be used the frame D is turned upward, as shown inFig. III, in which position it will act as a back-support for thecopy-slats to be used. Inside of the staples a projecting hooks m arearranged on the slateframe, to support the bottom ot' the copy-slats,and thus prevent them from sliding off.

o are small projections at the back of the arms of thewire frame',attached to 'the slateframe to support the Wire frame D in the desiredinclined position when open.

The ends o outside of the staples a of the Wire frame D may be slightlybent, so that `when the frame is closed these ends Will press againstthe slate-frame B, and act as springs when the frame D is relieved fromthe action of the hooks u, and thus force the frame D upward. j

What I claim as my invention, and desire to secure by Letters Patent,is-

lfln combination with a school-slate, the Wire frame-D and hooks n, tosecure the copyslats, substantially in the manner and forthe purposedescribed.

2. In combination with a school-slate, provided With a Wire frame, D, asdescribed, the projections v o and projecting hooks m m, arrangedsubstantially as and for the purpose set forth.

FRED. ARZT.

Witnesses: v HENRY E. ROEDEE,

J. B. NoNEs.

